Two new species of Lycaenidae, Iolaus (Argiolaus) stewartii sp.nov and Eicochrysops pinheyi sp. nov. are described and illustrated from Zambia. The subgenera Argiolaus, Iolaphilus and Philiolaus of Iolaus are discussed. Philiolaus is placed as a new synonym of Argiolaus and Iolaphilus is redefined